20020311000 has 128 divisors (see below), whose sum is σ = 69403838400. Its totient is φ = 5338742400.

The previous prime is 20020310977. The next prime is 20020311049. The reversal of 20020311000 is 11302002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 343747 + ... + 397746.

Almost surely, 2^20020311000 is an apocalyptic number.

20020311000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020311000 is an abundant number, since it is smaller than the sum of its proper divisors (49383527400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20020311000 is a wasteful number, since it uses less digits than its factorization.

20020311000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741523 (or 741503 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 20020311000 its reverse (11302002), we get a palindrome (20031613002).

The spelling of 20020311000 in words is "twenty billion, twenty million, three hundred eleven thousand".